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In the 3kVA MultiPlus-II model, the 2400W rating refers to the total power that the unit can handle, which includes both the AC output load and the battery charging load.
Here’s how it works:
Total Power Capacity:
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The 2400W (3kVA) rating of the MultiPlus-II represents the total power capacity that the unit can handle at any given time. This capacity is shared between the AC output and the battery charging function.
Shared Capacity:
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When the MultiPlus-II is supplying power to AC loads (AC-out) and charging the batteries simultaneously, the combined power of these functions cannot exceed the total rated capacity of 2400W.
Load Distribution:
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If the AC output is under a heavy load close to the 2400W limit, the available power for battery charging will be reduced accordingly to keep the total power within the 2400W capacity.
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Conversely, if the battery is charging at a high rate, the available power for the AC output will be reduced to maintain the overall power usage within the unit’s capacity.
Power Management:
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The MultiPlus-II intelligently manages power distribution between these functions. If a high demand is placed on the AC output, the inverter/charger will automatically reduce the battery charging current to prevent overloading the system.
Practical Examples:
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If you have a load of 1500W on the AC-out, and your batteries are being charged at a rate that requires 900W, this totals 2400W. The MultiPlus-II will manage these loads to ensure the total does not exceed the 2400W capacity.
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However; If you have a load of 1800W on the AC-out, and your batteries are being charged at a rate that requires 900W, this totals 2700W, exceeding the MultiPlus-II 2400W capacity, which would cause the overload light to turn on or even the inverter to shut itself down, in order to protect itself.
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